Supercapacitors with porous carbon structures have high energy storage capacity. However, the nature of electrode, composed mainly nanotubes (CNTs) and graphene oxide (GO) derivatives, negatively impacts volumetric electrochemical characteristics supercapacitors because poor packing density (<0.5 g cm(-3)). Herein, we report a simple method to fabricate highly dense vertically aligned reduced (VArGO) electrodes involving hand-rolling cutting processes. Because their opened-edge structure,...

As communication systems that employ millimeter wave (mmWave) frequency bands must use large antenna arrays to overcome the severe propagation loss of mmWave signals, hybrid beamforming has been considered as an integral component communications. Recently, intelligent reflecting surface (IRS) proposed innovative technology can significantly improve performance through low-cost passive elements. In this paper, we study IRS-aided multiple-input multiple-output (MIMO) with architectures. We...

The impact of transmit correlation on the performance limited feedback multi-user MIMO is investigated. Correlated fading shown to highly influence probability scheduling orthogonal users and ability achieve small quantization errors. indeed beneficial MU- as it can potentially reduce error, if an appropriate codebook used. Grassmanian line packing very much inappropriate for MU-MIMO in correlated environments, while DFT-based codebooks channel statistics-based are promising candidates....

We discuss the influence of V-pits and their energy barrier, originating from its facets (101¯1) planes, on luminescence efficiency InGaN LEDs. Experimental analysis using cathodoluminescence (CL) exhibits that thin quantum wells (QWs) appear to be effective in improving emission intensity, preventing injected carriers recombining non-radiatively with threading dislocations (TDs). Our theoretical calculation based self-consistent approach adopting k⋅p method reveals higher V-pit barrier...

In this letter, a compact single-feed circularly polarized dielectric resonator antenna is proposed for X-band applications. The radiator comprises semi-eccentric annular (DR), which semi-elliptical DR with hollow elliptical cylinder. A vertical coaxial probe located adjacent to cutting surface of the excite antenna. two main design parameters, aspect ratio and feeding position, were optimized, prototype was fabricated tested. experimental results exhibit -10-dB reflection bandwidth 29.14%...

A retrospective cohort study.To present the cases of 6 patients who developed C5 palsy after anterior decompression and discuss mechanism development, especially with respect to radiographic change.C5 has been reported be a major complication both posterior procedures. Although several mechanisms injury have proposed, few reports issued on surgery.A medical record review was performed 134 underwent fusion in our hospital from 2008 2011. paralysis defined as deterioration muscle power deltoid...

A time-to-digital converter (TDC) is a key element for the digitization of timing information in modern mixed-signal circuits such as digital PLLs, DLLs, ADCs, and on-chip jitter-monitoring circuits. To build high-resolution TDCs, many researchers have focused on minimizing unit delay quantization. Vernier delay-line-based TDCs are good example. Their performance, however, limited by variation random mismatch among cells, unless additional error correction or external control applied....

<h3>Importance</h3> The potential association between breast implant–related anaplastic large cell lymphoma (BIA-ALCL) and implant texture has raised concerns about the additional unexpected adverse effects of textured implants, including potentially outcomes for other cancers. In addition to risk developing BIA-ALCL, cancer survivors may worry whether type inserted is associated with recurrence their original cancer—an issue which little evidence currently exists. <h3>Objective</h3> To...

A novel series of 2-amino-1,3,5-triazines bearing a tricyclic moiety as heat shock protein 90 (Hsp90) inhibitors is described. Molecular design was performed using X-ray cocrystal structures the lead compound CH5015765 and natural Hsp90 inhibitor geldanamycin with Hsp90. We optimized affinity to Hsp90, in vitro cell growth inhibitory activity, water solubility, liver microsomal stability identified CH5138303. This showed high binding for N-terminal Hsp90α (Kd=0.52nM) strong inhibition...

This article presents a low-power, all-digital multichannel time-to-digital converter (TDC) for light detection and ranging (LiDAR) sensors. The proposed TDC architecture measures the time interval through coarse counter, middle, fine delay line-based interpolation technique (the Nutt method). Automatic calibration by middle delay-locked loops (ADDLLs) is provided to ensure stability of generated slots. Charge pump, loop filter, voltage-controlled line inside conventional analog (DLLs) are...

As digital CMOS technology scales to 32nm and below, small low-voltage clock timing generators are in high demand avoid complex analog operations meet stringent phase noise requirements. There have been sever- al approaches convert systems their counterparts a high- resolution time-to-digital converter (TDC) is key element for the digitalization of circuits. Recently TDCs using shaping technique with oversampling introduced improve resolution. However, they tend be power hungry or require...

ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTYb9Zn4Bi9: Extension of the Zintl Concept to Mixed-Valent Spectator Cations†Sung-Jin Kim, Jim Salvador, Daniel Bilc, S. D. Mahanti, and Mercouri G. KanatzidisView Author Information Department Chemistry Physics Michigan State University, East Lansing, 48824 Cite this: J. Am. Chem. Soc. 2001, 123, 50, 12704–12705Publication Date (Web):November 17, 2001Publication History Received20 August 2001Published online17 November inissue 19 December...

Abstract We present a feasible modeling method to estimate the proper curvature for large‐sized curved TVs. especially focused on two factors – preference and perceived distortion be considered determine curvature. The includes number of advantages that people expect fulfill possibilities more immersive image sense realism from display. On other hand, means side effects can notice uncomfortable feeling caused by shape one. In order find out how would different as conditions like curvature,...

This paper presents a low power FSK transceiver with ADPLL based on direct modulation and integrated SPDT switch for Bluetooth energy application. To ensure that the proposed can operate at 1 Mbps data rate, is implemented using an all-digital phase locked-loop technique. The to share antenna matching network between transmitter receiver, thus minimizing system cost by reducing external components. 1P6M 55-nm CMOS technology. die area of DC-DC converter 1.79 mm <sup...

We proposed the statistical misalignment model and power-efficient configuration of transceivers for bi-directional multi-input multi-output (MIMO) based vertical free space optical (FSO) links. Spatial diversity MIMO FSO systems could be used to mitigate atmospheric fading issues. However, increased number channels can cause additional pointing error in pointing, acquisition tracking (PAT) systems. The detecting is derived from multiple transceivers. For characteristics non-terrestrial...

This paper presents a fast-settling, low-power, lownoise real-time clock (RTC) generator for 4.194304-MHz crystal oscillator. The fast settling reduces the startup time of proposed RTC using negative transcondutance booster and energy booster. low power is only operated to reduce total consumption in standby mode with use peak-and-low detector. To achieve electromagnetic interference (EMI) reduction, pseudorandom number used. temperature compensation frequency offset from 16 1 ppm depending...

Partial strain relaxation effects on polarization ratio of semipolar (112̄2) InxGa1−xN/GaN quantum well (QW) structures grown relaxed InGaN buffers were investigated using the multiband effective-mass theory. The absolute value gradually decreases with increasing In composition in buffer layer when (ε0y′y′−εy′y′)/ε0y′y′ along y′-axis is assumed to be linearly proportional difference lattice constants between and layer. Also, it changes its sign for QW structure a relatively larger (x >...

This paper presents an ultra-low noise low-dropout (LDO) regulators for powering RF applications. The proposed LDO employs two internal reduction network at the output of bandgap reference (BGR), and between feedback resistors node (VFB in Fig. 1) to achieve interest frequencies. 5-bits controlled resistor ladder is adopted compensate process, voltage, temperature (PVT) variations. voltage level can be from 1.05 V 2.6 with trimming step 50 mV. highest 64.52 nV/VHz 10 KHz. implemented CMOS 55...

The race to deep sub-micron CMOS technology has resulted in a change device architectures, from planar structure FinFET achieve decreased leakage, further downscaling, and better sub-threshold slope, even under lower power supply. Downscaling trends have forced the analog semiconductor industry move digital domain maintain functionality light of increasing short-channel effects mismatch. Furthermore, main goal new is faster speed cost. In leading-edge processes design environments,...

A capacitive discharge connected through a dielectric or metal slot to peripheral grounded region is configuration of both theoretical and practical interest. The used in commercial dual frequency discharges, where surrounding the substrate separates main plasma from pumping region. Ignition produces effects such as poor matching relaxation oscillations that are detrimental processing performance. Discharge models developed for diffusion maintenance slot, periphery. predictions ignition...

Using digital standard cells and place-and-route (PnR) tools, we created a 20 GS/s, 8-bit analog-to-digital converter (ADC) for use in high-speed serial link applications with an ENOB of 5.6, DNL 0.96 LSB, INL 2.39 which dissipated 175 mW 0.102 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> 16nm technology. The design is entirely described by HDL so that it can be ported to other processes minimal effort shared as open source.

Electronic and optical properties of non-trivial semipolar AlInGaN/InGaN quantum well (QW) structures are investigated by using the multiband effective-mass theory non-Markovian model. On vicinal c-plane GaN substrate miscut a small angle (θ &amp;lt; 40°) from c-plane, system is shown to have ∼3 times larger spontaneous emission peak intensity than conventional InGaN/GaN at green wavelength. It attributed much matrix element quaternary system, derived reduction internal electric field...